do not dnk alcohol in excess with cialis. side effects may include headache, upset stomach, delayed backache or muscle ache. to avoid long-term injury, seek immediate medical help for an erection lasting more than four hours. if you have any sudden decrease or loss in hearing or vision, or if you have any allergic reactions such as rash, hives, swelling of the lips, tongue or throat, or difficulty breathing or swallowing, stop taking cialis and get medical help right away. ask your doctor about cialis for daily use and a 30-tablet free trial. [ female announcer ] do you think the best of nature and science and research should go into the products you trust? then you think like amway. yes. amway. using the highest quality standards, we develop and manufacture just what you need for nutrition, home care, and beauty, backed with a 180-day satisfaction guarantee. amway conveys quality. learn more from your amway independent business owner.